"It's about jobs and the economy, working together, trying to focus on common ground to really tackle some of the big issues we face," Dold said.

Dold, of Rose Pest Solutons, is in a tight race with Brad Schneider (D), a management consultant from Deerfield, Ill. This race is being closely monitored nationally as it is one of several that will impact control of Congress.

The company said its fourth-quarter earnings rose 17%. Ecolab CEO Doug Baker said the company’s U.S. pest business “has been steadily improving” due to a number of investments in that business starting two years ago.